Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water to close to boiling, then force it through tightly packed, finely ground coffee in the portafilter to create a concentrated cup of espresso. Many models allow you to control the most important espresso elements https://www-coffeee-uk15317.anchor-blog.com/10088621/how-to-outsmart-your-boss-in-bean-to-cup-espresso-machine